Photo

A river boat makes its way on the Moskva River, as the Kremlin is seen through heavy smog covering Moscow, Russia, Friday, Aug. 6, 2010. The city of Moscow was shrouded Friday by a dense smog that grounded flights at international airports and seeped into homes and offices, as wildfires that have killed 50 people nationwide continued to burn. (AP Photo/Misha Japaridze)
/ AP